Cake-cutter



G. W. KNAPP.

CAKE CUTTER.

. (No Model.)

Patented Oct. 1, 1889.

WITNESSES I INVENTOR:

ATTORNEY;

UNITED STATES PATENT rFicE.

GEORGE W. KNAPP, OF BALTIMORE, MARYLAND.

CAKE-CUTTER.

SPECIFICATION formingpart of Letters Patent No. 412,100, dated October1, 1889.

Application filed November 28, 188B. herial No. 292,066, (No model.)

To aZl whom it may concern.-

Be it known that I, GEORGE W. KNAPP, a citizen of the United States,residing at Baltimore, in the State of Maryland, have in vented certainnew and useful Improvements in Cake-Gutters, of which the following is aspecification.

This invention relates to an improved cakecutter made of tin-plate, andwill first be described, and then designated in the claim.

Referring to the accompanying drawings, Figure 1 is a top view of thecake-cutter. Fig. 2 is a side view of the same. Fig. 3 is a diametricalsection. Figs. at and 5 are bottom and side views, respectively,indicating by a broken line the position of the fluted cutting-edge, andshowing by a full line the size and shape of the rim previous to beingfluted.

Cake-cutters must have a straight up-anddown or vertical cutting-rim,which it is desirable should be fluted or corrugated. Heretofore thesecutters have been made of two separate piecesthe fluted cutting-rim andthe top plate-which have been soldered to gether. This way ofconstructing them, besides being expensive, is objectionable, in thatafter a little use the top plate often becomes detached from the rim,and, again, the angles, crevices, or rough places on the inner side,where the said parts are united and where the solder is, iorm a lodgmentfor the dough, and therefore diflicult to keep clean.

Referring to the drawings, the letterA designates the vertical flutedcutting-rim, and B the circular top plate. These two parts are integral,or made of one piece of sheet metal, without scams or joints. In orderto produce this article from a single piece of sheet metal, I take acircular piece of tin-plate and by means of a suitable die first stampit up into the shape shown in Fig. 5that is, so as to have a convex topand a circular rim vertical or at right angles with respect to the planeof the edge d. This first operation leaves the circular rim plain and ofa larger diameter than it is when fluted and finished. It is then put inanother die, and the plain circular rim. is drawn down and contracted,so as to form the flutes. In this last operation the diametrical size isreduced. It will be seen that the circular rim first formed must beenough larger diametrically to allow of the diametrical reduction insize consequent upon forming the said plain rim into flutes.

In the finished article the top plate B is slightly convexed, and at itsoutermost circumference has a rounded or down-curve part c, which thevertical fluted rim A adjoins. The top also has a hole (1 in its center,which serves as an air-vent when cutting dough.

Bythe described formation or contour the sheet metal or tin-plate willyield to the action of dies, and the vertical flutes in the rim may beproduced without breaking the sheetmetal plate. It will be seen that thearticle is smooth and free of angles or crevices on the inner side at c,where the vertical fluted rim adjoins the top, and therefore there areno places for lodgment of dough.

This article, it will be understood, is for cutting dough that has beenrolled out on a board, and thus gives shape to the cake that is producedby baking the dough.

Having described my invention, I claim- A sheet-metal cake-cutterhaving-a vertical fluted cutting-rim A and a top B, said parts A and Bbeing integral, or made of a single piece of sheet metal, substantiallyas specified.

In testimony whereof Iaffix mysignatu re in presence of two Witnesses.

GEORGE N. KNAPP.

Nitnesses:

Jim. T. MADnoX, J can E. MORRIS.

